XOMA CORP DEL

Ticker: XOMA CUSIP: 98419J206 Class: Common Stock

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

Note: Option positions (PUT/CALL) are excluded.

Q3 2020

Shares 50,809 Value ($000) $957 Avg Close $18.74 Range $15.48 - $21.55

Q2 2020

Shares 50,809 Value ($000) $1,004 Avg Close $21.94 Range $17.55 - $27.13

Q1 2020

Shares 50,809 Value ($000) $1,034 Avg Close $23.09 Range $14.14 - $28.78

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2020	50,809	$957	$18.74	$15.48 - $21.55
Q2 2020	50,809	$1,004	$21.94	$17.55 - $27.13
Q1 2020	50,809	$1,034	$23.09	$14.14 - $28.78